Melania Trump, Michelle Obama share the same secret to a happy marriage

Melania Trump is often compared to former US First Lady Michelle Obama, usually coming off short.

This time, it seems both first ladies have something in common, and it has to do how they achieve happy, long-term marriages: separate bathrooms.

Michelle Obama was at the launch of her new initiative 'Global Girls Alliance' on US Today, and she was discussing her marriage to former President Barrack Obama and their time in the White House.

The same secret to happy marriage. (Getty )

"One of the keys to a successful marriage is separate bathrooms," she said. "When he enters my bathroom sometimes I'm like, 'Why are you in here?' And he's like, 'I live here, can I enjoy my bathroom too?’"

Melania Trump made a similar comment in 2015 when speaking with PEOPLE magazine, when she stated, "The key to a healthy marriage is having separate bathrooms".

Both women stopped short at talking about separate bedrooms.

The Obamas have been married for 16 years and the Trumps for 13 years. (Getty )

In 2017 the Melania was forced to deny claims she and Donald Trump sleep in separate rooms during yet another discussing speculating about Mr Trump’s alleged infidelities.

"I'm a mother and a first lady, and I have much more important things to think about and to do," Melania told ABC News at the time. "It is not concern and focus of mine. [sic]"